Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/utils/MapUtils.java @ 9672:b70b1bc0eece 3.2.x

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Essentially rewrite MapUtils.getConnection() to cope with driver capabilities
author Tom Gottfried <tom@intevation.de>
date Sat, 23 May 2020 10:37:23 +0200
parents 9cfc495a9f40
children 0a5239a1e46e
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013, 2020 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.utils;
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10
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11 import java.net.URI;
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12 import java.net.URISyntaxException;
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13
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14 import org.apache.log4j.Logger;
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15 import org.hibernate.impl.SessionFactoryImpl;
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16
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17 import org.dive4elements.river.backend.SessionFactoryProvider;
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18
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19
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20 public class MapUtils
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21 {
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22 private static final Logger log = Logger.getLogger(MapUtils.class);
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23
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24 private static final String JDBC_SCHEME = "^jdbc:";
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25
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26 private static final String JDBC_DRV_PATTERN =
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27 JDBC_SCHEME + "(postgresql|oracle:(thin|oci)):.*";
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28
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29 /**
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30 * This method returns a connection string for databases used by
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31 * Mapserver's Mapfile.
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32 *
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33 * @return A connection string for Mapserver.
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34 */
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35 public static String getConnection() {
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36 SessionFactoryImpl sf = (SessionFactoryImpl)
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37 SessionFactoryProvider.getSessionFactory();
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38
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39 String user = SessionFactoryProvider.getUser(sf);
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40 String pass = SessionFactoryProvider.getPass(sf);
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41 String url = SessionFactoryProvider.getURL(sf);
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42
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43 return getConnection(user, pass, url);
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44 }
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45
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46 public static String getConnection(String user, String pass, String url) {
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47 log.info("Parse connection string: " + url);
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48
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49 if (!url.matches(JDBC_DRV_PATTERN)) {
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50 log.error("Could not parse connection string: "
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51 + "Not a JDBC URL with PostgreSQL or Oracle driver");
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52 return null;
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53 }
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54
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55 URI uri = null;
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56 try {
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57 // Strip JDBC_SCHEME to let the driver be parsed as scheme
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58 uri = new URI(url.replaceFirst(JDBC_SCHEME, ""));
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59 }
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60 catch (URISyntaxException e) {
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61 log.error("Could not parse connection string: " + e.getMessage());
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62 return null;
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63 }
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64
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65 String drv = uri.getScheme();
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66 log.debug("Driver: " + drv);
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67
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68 String connection = null;
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69 if (drv.equals("oracle")) {
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70 try {
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71 // Work-around the extra colon in the driver part of the scheme
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72 String con = new URI(uri.getSchemeSpecificPart())
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73 .getSchemeSpecificPart().replaceFirst("^@(//)?", "");
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74 log.debug("Database specifier: " + con);
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75 connection = user + "/" + pass + "@" + con;
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76 }
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77 catch (URISyntaxException e) {
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78 log.error("Could not parse Oracle connection string: "
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79 + e.getMessage());
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80 return null;
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81 }
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82 }
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83 else { // assume PostgreSQL
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84 String host = uri.getHost();
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85 if (host == null && uri.getSchemeSpecificPart().startsWith("//")) {
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86 // invalid hostnames (e.g. containing '_') are not parsed!
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87 log.error("Could not parse PostgreSQL connection string: "
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88 + "invalid host name");
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89 return null;
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90 }
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91 String db = host == null
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92 ? uri.getSchemeSpecificPart()
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93 : uri.getPath();
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94 int port = uri.getPort();
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95 connection = createConnectionString(user, pass, host, db, port);
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96 }
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97
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98 return connection;
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99 }
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100
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101 private static String createConnectionString(
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102 String user,
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103 String pass,
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104 String host,
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105 String db,
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106 int port
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107 ) {
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108 StringBuilder sb = new StringBuilder();
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109 // Required parameters
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110 // defaults to user name in PostgreSQL JDBC:
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111 if (db != null) {
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112 db = db.replaceFirst("/", "");
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113 }
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114 sb.append("dbname=").append(db == null || db.equals("") ? user : db);
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115 sb.append(" user=").append(user);
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116
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117 // Optional parameters
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118 if (host != null) {
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119 sb.append(" host='").append(host).append("'");
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120 }
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121 if (port != -1) {
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122 sb.append(" port=").append(port);
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123 }
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124 // XXX: We need to escape this somehow.
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125 sb.append(" password='").append(pass).append("'");
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126 sb.append(" sslmode=disable");
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127 return sb.toString();
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128 }
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129
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130 public static String getConnectionType() {
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131 return RiverUtils.isUsingOracle() ? "oraclespatial" : "postgis";
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132 }
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133 }
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